Working cylinder of internal-combustion engines.



. w. A.- sou; WORKING CYLINDER OF INTERNALCOMBUSTION ENGINES. I

ArmcAfgon mm m. 22.1910.

1,187,492. I PatentedJ une20, 1916.

'LIVIVTNSES;

I BY

I urs AmRNEY m FACT.

STATESPATENT. omen.

WILLIAM A. BOLE, or PITTSBURGH, rnimsrnvsnm.

WONG CYLINDER 0F INTERNAL-COMBUSTION ENGINES.

To all whom it may concern and more particularly to .the cylinders of internal combustion engines of the Water cooled type.

It has become necessary under certain conditions to make the cylinders of large gas engines out of steel. These may be forged but are preferably cast. As all gas engines of the larger sizes are necessarily water cooled it is necessary to provide the cylinders with a water jacket and this, in the way the cylinders have heretofore been made, has very materially complicated ture.

When the cylinders are made of cast iron 1 it is not impossible to core =the casting in screws and various kinds of "packing, but

such amanner that the jacket'shell is a part of the cylinder casting. This of course is impossible in making forged cylinders and has proven very difficult in making cast steel cylinders. I v

I am aware that various attempts have been made to mechanically secure the jacket shells to the cylinders by utilizing bolts or so far as I am aware none of these schemes have proved satisfactory.

An object of this invention .is to produce a jacketed cylinder which may be forged.v

from steel or cast either of steel or gray iron.

A further object has been to provide a cylinder that may have its outer surface machined in order to provide a uniform wall thickness and has a jacket shell unitedto the cylinder without the means of bolts or screws or packing.

These and other objects I accomplish by.

the means described in the specification and illustrated in the single sheet of drawing accompanying same. i

It will be understood that this inventlon .is applicable to a great variety of designs their manufac- Specification'of Letters Patent. Patented June 20 1916, 7 Application filed march 22, 1910. Serial Ho. 551,006.

of engine cylinder whether for horizontalor vertical engines, or whether single or double acting. In the drawing I have illustrated a cylinder for a horizontal double acting enformed that the outer surface 5 may berough machined in order to secure a uniform ,c'ylin der wall thickness. The outer surfaces of the end flanges 6-6 are preferably turned off so as to be concentric with the cylinder bore.

A sheet steel shell 7, made up of any desired number of pieces united together-is; weld united to the cylinder body which is preferably provided with flanges 8 and .9.of substantially the same thickness as the shell 8, so as to facilitate the welding process in. that the flanges can be heated at the same speed as the shell.

Oneor more hand holes 10 may be provided in the shell so that the interior of the water jacket formed by the shell may be inspected and cleaned out. 'The steel shell is preferably corrugated in'order to allow for the expansions and contractions due to temperature changes encountered in the operation of the engine. The jacket shell maybe weld united to the cylinder body by any suitable weldingprocess such as acetylene or electric welding, the acetylene welding how- I ever being preferred.

cylinder a passage located outside of the cylinder.

2. A steel cylinder having welding flanges integrally formed thereon, a sheetsteel shell surrounding said cylinder and autogenously secured to said flanges, said flanges being so formed that the shell engaging portions thereof have substantially the same heat conducting-capacity asthe metal shell secured thereto.

'3. A steel cylinder having. a welding flange "cast. integfaHy therewith and -so fcrmedj :aQ-r

.' to, and a; metalsheet autogeilously secured to to be of substalntially the same heat conduct subscribed m c I Ine testim onywihereofl Ihave hereufito I y name this 10th day of March, mg capacity as the metal sheet secured there- 191 O.

' I WILLIAM A. BOLE; said flange and forming with the exterior Witnesses: surface of thecylinder a passage located'on G. W. MQGHEE, the outside-ofithe cylinder. 1 JAs. R. HARNEY'. 

